[clang] [Clang][CodeGen] Respect -fwrapv-pointer when emitting struct GEPs (PR #134269)

[Eli Friedman via cfe-commits]

efriedma-quic wrote:

> most of them are safe

What's the distinguishing factor here?  Do you consider it "safe" to mark inbounds if the pointer is immediately dereferenced?  Or does the pointer have to refer to a known successful allocation?  Or something else?

https://github.com/llvm/llvm-project/pull/134269